2001125
Cell Transportation
- Enzymes (Type 1)
- Catalysts:
Speeds up
reactions
without being
used up
themselves
- Energy of
Activation: the
amount of energy
the reactants must
absorb to become
activated and start
a chemical reaction
- Endergonic Reactions
- Exergonic Reactions:
a reaction that
releases energy
- Endergonic Reactions
- Energy of
Activation: the
amount of energy
the reactants must
absorb to become
activated and start
a chemical reaction
- Active Site: 3-D
site that substrate
will bind to
- Substrate: molecule
that binds with an
enzyme, the reactant
- Induced fit &
Hydrolysis
Reactions
- Causes Entropy
- First Law of
Therodynamics
- Energy cannot be created nor
destroyed, only transformed or
transferred
- Energy cannot be created nor
destroyed, only transformed or
transferred
- Second Law of
Therodynamics
- Energy conversions reduce
the order of the universe
and increase entropy
- Entropy: the
amount of disorder
in a system
- Entropy: the
amount of disorder
in a system
- Energy conversions reduce
the order of the universe
and increase entropy
- First Law of
Therodynamics
- Causes Entropy
- Competitive
Inhibitors: blocks
active site and
active site
becomes close
- Incompetitive
inhibitors: change the
shape of the active
site by binding at a
different location
- Induced fit &
Hydrolysis
Reactions
- Substrate: molecule
that binds with an
enzyme, the reactant
- Imbedded in membrane
- Phospholipid bilayer
- Fluid Mosaic Model
- Made of tails of lipids (hydrophobic) and
the heads (hydrophilic) that attract water
molecules
- Fluid Mosaic Model
- Enzymes
- 3 types of membrane proteins
- Receptors
- Transport
- Passive Transport
- Diffusion
- Molecules always move from
an area of [H] --> [L]
- No ATP
- No ATP
- Molecules always move from
an area of [H] --> [L]
- Osmosis
- The diffusion of water
across a semipermeable
membrane
- No ATP
- No ATP
- The diffusion of water
across a semipermeable
membrane
- Facilitated Diffusion
- Transport proteins may facilitate
diffusion across membranes
- No ATP
- No ATP
- Transport proteins may facilitate
diffusion across membranes
- Diffusion
- Active Transport
- Endocytosis
- Phagocytosis
- cell eating
- cell eating
- Pinocytosis
- cell drinking
- cell drinking
- Receptor- mediated
- Phagocytosis
- Exocytosis
- [L] --> [H]
- Sodium Potassium Pump
- Endocytosis
- Passive Transport
- Receptors
- 3 types of membrane proteins
- Phospholipid bilayer
- Catalysts:
Speeds up
reactions
without being
used up
themselves
- Energy
- Potential Energy
- stored energy
- stored energy
- Kinetic Energy
- Energy in motion
- Energy in motion
- Potential Energy
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